Fix pluralization
Fixed a minor gramatical error

Changed occurences of 'she' to 'they'
Fixed example code for randomly shuffling array so that last item isn't always shuffled out of last spot.
Remove stray backtick
Adding Equality article
Merge pull request #26 from jawwad/remove-stray-backtick

Remove stray backtick
Merge pull request #25 from benrblakely/patch-1

Fixed example code for randomly shuffling array so that last item isn't ...
Merge pull request #24 from iCooke/nick-nshashtable-nsmaptable-grammar-fix

Fixed a minor grammatical error in the NSHashTable and NSMapTable article
Merge pull request #23 from jawwad/nsdatecomponents-pluralization-fix

Fix pluralization
Adding section about NSString equality. /thanks @tjernlund
Using explicit class names in -isEqual: implementations /thanks @mikeash
Fixing calculation of RGB components (forgot 0.0-1.0 for CGFloat) /thanks @mikeash
Miscellaneous corrections and fixes
Grammar
Fixing class comparison
Update 2013-08-26-equality.md

This does not hold true for all immutable strings, only for those that are statically defined. Here is a simple counter example:

#import <Foundation/Foundation.h>

int main(int argc, char * argv[]) {
    @autoreleasepool {

        NSString * a = @"Hello";
        NSString * b = @"Hello";

        NSMutableString * c = [[NSMutableString alloc] init];
        [c appendString:@"Hel"];
        [c appendString:@"lo"];

        NSString * d = [[NSString alloc] initWithString:c];

        NSLog(@"a == b: %d", a == b);
        NSLog(@"a == d: %d", a == d);
        
    }
}
Fixed typo in UIColor category
Fixing typo (/thanks @algal)
Adding Xcode snippets article
Merge pull request #27 from ericjohnson/master

Update 2013-08-26-equality.md